FNB your accounts are not safe this is a major security risk even it you dont have any money in them

I recently was a victim of a *****ulent transaction of R4,104.14 on 13/03/2025 on my FNB account, the approval on my smart phone was declined and there was only R1,200 in my account, so insufficient funds FNB processed it anyway and I reported it immediately and got my card replaced, I have just followed up with FNB as I have not heard from them and it has been declined, apparently they sent an email on 19/03/2025 informing me of such which I have not received. THIS is a major security risk at FNB